Process for manufacturing of composite pipes

Details Process for manufacturing of composite pipes Process for manufacturing of composite pipes

1986-02-20

1988-05-10

Lechert, Jr., Stephen J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

138143, 156293, 427230, 427238, 428 36, 428457, 428458, 428461, 428462, B32B 3100

Patent

active

047433299

ABSTRACT:
Improved composite pipes are proposed which comprise an outer pipe made of plastic and a thin lead layer on the inner wall of the outer pipe. The lead layer is formed by arranging a lead pipe in the outer pipe and expanding it by use of pressure medium into close contact with the inner wall of the outer pipe. The outer pipe may be circular or square or double-path. A process for producing the composite pipes is also proposed.

REFERENCES:
patent: 3862418 (1975-01-01), Preiss
patent: 4144111 (1979-03-01), Schaerer
patent: 4370186 (1983-01-01), Blandin et al.

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